IDAHO (MT)

Cyberchase"Going Solar"
A televised skate-off will decide ultimate naming rights for the new Radopolis skate park. Will it be named after Slider, the ace skateboarder of Cyberspace, or The Hacker, the vainest villain in the virtual universe? When the power mysteriously goes out at the skate park, the CyberSquad and Digit must find a way to turn it back on before the nighttime skateboarding extravaganza. They decide to use solar panels to collect energy during the day that can power the park at night. D

5:00 pm

Fetch! With Ruff Ruffman"Will They Like The Show? It's A Shoe-In!"
DJ and Sammy head to a sneaker company to design and build more functional footwear while Jay and Sam learn the art of street performing. D

5:30 pm

Nightly Business Report
Tonight on Nightly Business Report, mixed signals on the housing market. Ivy Zelman, the analyst who called housing's top and bottom, makes sense of the conflicting numbers. And, the third part of our health series looks at whether the taxpayer could be on the hook if the federally-funded insurance co-ops don't work out as planned. D

Attenborough's Giant Egg
On a hot day in 1961, while a young David Attenborough was filming Zoo Quest, a Malagasy boy handed him some pieces of a huge eggshell found on a sandy river bank. Spreading the fragments on the ground, the British scientist surveys the pieces of a unique and important jigsaw puzzle. The egg fragments he was given belonged to the largest bird that has ever lived, the half-ton extinct elephant bird Aepyornis.G

8:00 pm

NOVA"Ground Zero Supertower"
NOVA examines the new skyscraper rising up 104 stories from the site where the Twin Towers once stood. This update of "Engineering Ground Zero," goes inside the construction of the tower's final floors and the installation of its 800-ton spire and beacon. The show also goes underground to inspect the multi-billion dollar transit center with its sweeping design.G

9:00 pm

Super Skyscrapers"The Billionaire Building"
Upon completion, the residential tower on Manhattan's 57th Street will rise more than 1,000 feet, making it the tallest building of its kind in the Western Hemisphere and boasting spectacular views of Central Park. This episode follows the teams tasked with creating New York's most luxurious residential skyscraper. Part 4 of 4G

10:00 pm

Earthrise: Apollo 8 and the First Lunar Voyage
This documentary recounts the flight many consider to be NASA's most daring and important. Interviews with Apollo 8 astronauts, their wives, mission control staff, and journalists take viewers inside the high-stakes space race of the late 1960s to reveal how a bold decision by NASA administrators put a struggling Apollo program back on track and allowed America to reach the moon before the Soviets.G